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  • 1
    Monograph available for loan
    Monograph available for loan
    Fields, flows and waves : an introduction to continuum models (2003)
    London [u.a.] : Springer
    Details Availability
    Call number: 19/M 05.0078
    Type of Medium: Monograph available for loan
    Pages: XII, 270 S. , graph. Darst.
    ISBN: 1852337087
    Series Statement: Springer undergraduate mathematics series
    Classification:
    Mathematics
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Multiphoton dynamics of H2 with 248 nm picosecond and femtosecond pulses (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 9044-9050 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Nonresonant excitation of H2 at 248 nm using 5 ps and 0.5 ps laser pulses with intensities 5×1011 and 5×1012 W/cm2, respectively, is studied by measurement of the angle-speed distributions of the H+ photofragment using velocity map imaging. Three main H+ production channels are observed: (a) three-photon dissociation to H(n=1)+H(n=2) followed by photoionization of H(n=2); (b) dissociative (auto)ionization following four-photon absorption to form H(n=1)+H++e−; and (c) autoionization from a doubly excited state producing a H2+ vibrational distribution peaking at (v+=2,7,13) and subsequent photodissociation of these vibrationally excited ions. In the neighborhood of the energy sum of three 248 nm photons lie transitions to the B′ 1Σu+(3pσ) vibrational continuum and the two bound states B″ 1Σu+(4pσ)(v=2) and D 1Πu+(3pπ)(v=4). These states are believed to play an important role in three-photon absorption and at the subsequent fourth photon level. Their effect on the observed kinetic energy and angular distributions is discussed. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1319994
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  • 3
    Electronic Resource
    Electronic Resource
    Crossed-beam velocity map imaging of collisional autoionization processes (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 7728-7730 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Applying the velocity map imaging technique Penning ion formation as well as generation of associative ions is observed in autoionizing collisions of metastable neon atoms (Ne* 2p5 3s 3P2,0) with ground state argon targets in a crossed molecular beam experiment. Metastable neon reactants are obtained by nozzle expansion through a dc discharge ring. The quality of the obtained results clearly demonstrates the suitability of this new, particularly straightforward experimental approach with respect to angle and kinetic energy resolved investigations of Penning processes in crossed-beam studies which are known to provide the highest level of detail. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1321771
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  • 4
    Electronic Resource
    Electronic Resource
    Nonresonant photofragmentation/ionization dynamics of O2 using picosecond and femtosecond laser pulses at 248 nm (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 112 (2000), S. 5654-5659 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Photodissociation/ionization of molecular oxygen in a cold molecular beam is studied using a short-pulse laser beam at 248 nm and velocity map imaging. Both photoelectron and O+ images are recorded for laser pulsewidths of 5 and 0.5 ps. Most of the observed ionization dynamics takes place after absorption of four laser photons, equivalent to 20 eV excitation energy, in an above threshold ionization process. Two main channels are identified: postdissociative ionization creating O(3P)+O**3s″(1P, 3P) atoms where O** is an electronically excited autoionizing atom, and molecular (auto)ionization to create a range of highly vibrationally excited ground electronic state O2+ ions. The observed O+ signals then arise from resonance-enhanced two-photon dissociation of O2+ or autoionization of O** atoms, while the electron signals arise from ionization of O2 or autoionization of O**. The latter channel can be used to directly scale the photoelectron and O+ signal strengths. The O+ images show strong differences for 0.5 ps and 5 ps pulse which could arise from ac Stark shifting of levels involved in the A 2Πu←X 2Πg transition of O2+. With resonance enhancement, two-photon dissociation of O2+ is the dominant process producing O+ ions. The O+ angular distributions show an anisotropy that is more extreme than a simple two-step dissociation, which is attributed to alignment effects. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.481140
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  • 5
    Electronic Resource
    Electronic Resource
    Short-wavelength photolysis of jet-cooled OClO(2A2 ν1〉20)→ClO(X 2ΠΩ,v,J)+O(3PJ) (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 114 (2001), S. 8339-8346 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Highly inverted vibrational level populations are found for ClO fragments resulting from the UV photodissociation of OClO(2A2 ν1〉20) into ClO(X 2ΠΩ,v,J) and O(3PJ) fragments. These distributions depend significantly on the spin–orbit J state of the oxygen O(3PJ) partner atom. In contrast, the ClO rotational excitation is modest. Distinct rotational structure is visible in the O (3PJ) photofragment yield spectrum recorded from the highly excited OClO (2A2 ν1=21) vibronic band, which is indicative for hitherto unforeseen long dissociation lifetimes of very highly excited OClO. The data point towards an unexpected nearly-linear and highly asymmetric dissociation geometry. Carrying out near-threshold fragmentation experiments of OClO (2A20,0,0)→ClO (X 2Π3/2 v=0, J)+O(3P2,1,0) the dissociation energy D0 of OClO has been accurately determined to 247.3±0.5 kJ/mol. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1367393
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  • 6
    Electronic Resource
    Electronic Resource
    IR excitation of ethylene molecules and clusters embedded in 4He droplets (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 114 (2001), S. 9463-9469 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Ethylene and ethylene clusters embedded in superfluid 4He droplets have been spectroscopically investigated with continuous wave line tunable CO2 and N2O lasers, utilizing the strong absorption of the ν7 mode of C2H4. The monomer and the different clusters of ethylene absorb in the same spectral region and show significant overlap of their spectra. By measuring the dependence of the signal on the pick-up pressure and fitting the resulting curves with a Poisson distribution and by further studying the spectral dependence on the droplet size, it was possible to assign two peaks. The origin of the 10 cm−1 broad gas phase dimer spectrum has been the subject of much discussion; we show that the broad peak is not due to homogeneous broadening, because the low temperature of the He droplet leads to a dimer full width at half maximum width of about 1 cm−1. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1369659
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  • 7
    Electronic Resource
    Electronic Resource
    Understanding performance measurement systems using physical science uncertainty principles (2001)
    Bingley : Emerald
    International journal of operations & production management 21 (2001), S. 981-999 
    Details
    ISSN: 0144-3577
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Observes that performance measurement models are largely based on deterministic assumptions about the world. Suggests that it is time to re-align performance measurement with post-deterministic discoveries made in the physical sciences, especially quantum physics. In the physical sciences, scientists have (reluctantly) come to accept that the world has a fundamental uncertainty at its core. Asks the question of what lessons can be drawn for performance measurement from this knowledge of the physical world. Addresses this question first by describing the development and epistemological consequences of three post-deterministic (physical world) discoveries of: uncertainty, bounded instability, and self-organisation. Then traces the equivalent path to uncertainty in management. Concludes that it is time for the oldest management theories, which still underpin current performance systems, to be realigned with knowledge on uncertainty. Ends with a look at two current performance systems, activity-based management, and the Balanced Scorecard. In line with knowledge about fundamental uncertainty, these (and other) performance systems should focus on identification of the "aggregate system" critical few.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/01443570110393450
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  • 8
    Electronic Resource
    Electronic Resource
    Economic performance in European telecommunications, 1978-1998: a comparative study (2002)
    Bradford : Emerald
    European business review 14 (2002), S. 194-209 
    Details
    ISSN: 0955-534X
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: The European telecommunications sector is undergoing major structural change in the face of new technology, privatisation and European Commission directives requiring market liberalisation. This study considers the comparative performance of the major European telecommunications operators between 1978 and 1998. This period encompasses an era of state monopolies, market liberalisation initiatives and a number of privatisations. The objectives are to assess: the extent so far to which market liberalisation and privatisation have impacted on the efficiency with which telecommunications services are provided in Europe; and changes in the performance of the different telecommunications operators over time with a view to providing an insight into the comparative efficiency performance of the different telecommunications operators in Europe. Performance is measured in terms of profit margins and labour and total factor productivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09555340210427085
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  • 9
    Electronic Resource
    Electronic Resource
    Climate Large-scale warming is not urban (2004)
    [s.l.] : Nature Publishing Group
    Nature 432 (2004), S. 290-290 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Controversy has persisted over the influence of urban warming on reported large-scale surface-air temperature trends. Urban heat islands occur mainly at night and are reduced in windy conditions. Here we show that, globally, temperatures over land have risen as much on windy nights as on calm ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/432290a
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  • 10
    Electronic Resource
    Electronic Resource
    EDITORIAL: LESSONS FROM PRIVATISATION (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Economic affairs 24 (2004), S. 0 
    Details
    ISSN: 1468-0270
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-0270.2004.t01-1-00484.x
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